High efficiency emitter for incandescent light sources
US7800290B2 · kind B2 · utility
0Cited by
9References
27Claims
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Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | May 9, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K3/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An emitter (F) for incandescent light sources, in particular a filament, capable of being brought to incandescence by the passage of electric current is obtained in such a way as to have a value of spectral absorption α that is high in the visible region of the spectrum and low in the infrared region of the spectrum, said absorption α being defined as α=1−ρ−τ, where ρ is the spectral reflectance and τ is the spectral transmittance of the emitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.